세라믹(Ceramic) 재료의 특성

<P style="TEXT-ALIGN: left; LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char; MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-WEIGHT: bold; mso-ascii-font-family: 굴림; mso-hansi-font-family: 굴림">세라믹의 특성</SPAN></P> <P style="TEXT-ALIGN: left; LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char; MARGIN-BOTTOM: 1.6pt" class=바탕글>  </P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">    세라믹재질의 종류는 용도에 따라 여러 가지가 있지만 본 자료에서는 </SPAN><SPAN style="FONT-FAMILY: 굴림; COLOR: #7a80d4; FONT-SIZE: 9pt; FONT-WEIGHT: bold; mso-ascii-font-family: 굴림; mso-hansi-font-family: 굴림">구조용세라믹</SPAN><SPAN style="FONT-FAMILY: 굴림; COLOR: #7a80d4; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">(Structure Ceramics)</SPAN></P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-ascii-font-family: 굴림; mso-hansi-font-family: 굴림">    위주로 설명 하였다. 구조용 세라믹이라 함은 내마모성,내열성,내식성,절연성을 활용한 분야이며 </SPAN></P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">    구체적인 재질은 알루미나, 지르코니아를 들 수 있다. </SPAN></P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글>  </P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글><?xml:namespace prefix = v /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><?xml:namespace prefix = o /><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림"><STRONG><FONT color=#0055ff>a. 알루미나 (Al<SPAN style="FONT-SIZE: 8pt">2</SPAN>O<SPAN style="FONT-SIZE: 8pt">3</SPAN>)</FONT></STRONG></SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     알루미나는 세라믹스의 가장 대표적인 산화물 세라믹스로 기계적 성능,내열성,내식성이 우수한 특성을</SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     가지고 있다. 반면 취성(충격에 크랙이나 치핑발생 현상) 있어 적정한 용도로 사용되어져야 한다. </SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     세분화된 재질의 기준은 알루미나의 순도에 의한 것이며 나머지 성분에 의해 소량의 상이한 특성을 </SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     나타내지만 전체적인 용도에는 큰 영향이 없는 편이다.</SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글> </P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림"><STRONG>         <FONT color=#5d5d5d>■ 알루미나의 순도별 특성</FONT></STRONG></SPAN></P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt; MARGIN-LEFT: 4em" class=바탕글> <TABLE border=0 cellSpacing=1 cellPadding=1 width=585 bgColor=#6b728d> <TBODY> <TR> <TD bgColor=#acb1c4 height=30 width=109> <DIV class=main_news2 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">항목 / 순도 </SPAN></STRONG></DIV></TD> <TD bgColor=#acb1c4 height=30 width=109> <DIV class=main_news2 align=center><SPAN style="FONT-SIZE: 10pt"><STRONG>85 %</STRONG></SPAN></DIV></TD> <TD bgColor=#acb1c4 height=30 width=109> <DIV class=main_news2 align=center><SPAN style="FONT-SIZE: 10pt"><STRONG>92 %</STRONG></SPAN></DIV></TD> <TD bgColor=#acb1c4 height=30 width=109> <DIV class=main_news2 align=center><SPAN style="FONT-SIZE: 10pt"><STRONG>95 %</STRONG></SPAN></DIV></TD> <TD bgColor=#acb1c4 height=30 width=109> <DIV class=main_news2 align=center><SPAN style="FONT-SIZE: 10pt"><STRONG>99 %</STRONG></SPAN></DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>소성밀도 (g/㎤)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>3.60</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>3.65</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>3.75</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>3.93</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>굽힘강도 (kg/㎟)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>33</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>37</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>40</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>52</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>파괴인성 (kg/㎣)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>17</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>19</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>21</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>26</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>충격강도(kgf/㎠)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>1.3</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>2.2</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>1.7</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>2.9</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>경 도 (HRA)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>92.6</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>93.4</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>94.7</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>94.9</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>내알칼리성(mg/㎠)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>-</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.42</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.30</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.09</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>내산성 (mg/㎠)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>-</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.29</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.28</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.5</DIV></TD></TR> <TR> <TD bgColor=#e3e6eb height=30 width=109> <DIV class=style3 align=center>내마모성 (㎤)</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.33</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.31</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.19</DIV></TD> <TD bgColor=#ffffff height=30 width=109> <DIV align=center>0.16</DIV></TD></TR></TBODY></TABLE></P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글> </P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글><FONT color=#cc723d><SPAN style="FONT-FAMILY: 굴림; COLOR: #f3720a; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">           ● 적용 : Guide Roller, 점화 plug,Crucible ,Sand blast Nozzle Mechanical Seal,IC 패키지 기</SPAN><SPAN style="FONT-FAMILY: 굴림; COLOR: #f3720a; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">판 </SPAN></FONT></P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글>  </P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글>  </P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글>  </P> <P style="TEXT-ALIGN: left; MARGIN-BOTTOM: 1.6pt" class=바탕글><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림"><STRONG><FONT color=#0055ff>b. 지르코니아 (ZrO<SPAN style="FONT-SIZE: 8pt">2</SPAN>)</FONT></STRONG></SPAN>  </P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     일명 고강도 세라믹스로 평가 받고 있으며 상대적으로 취성이 있는 알루미나 재질의 대체용으로 </SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     넒게 활용되고 있다. 따라서 내마모성과 내충격성을 요구되는 부품으로 적당하지만 상대적으로 고가</SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     이므로 경제적측면에서도 고려되어야 한다. 상업적으로 유통되고 있는 지르코니아 원료는 용적변화에 </SPAN></P> <P style="MARGIN-BOTTOM: 1.6pt" class=바탕글><SPAN style="FONT-FAMILY: 굴림; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">     따른 취성을 보완한 안정화 지르코니아 원료가 주류를 이루고 있다. </SPAN></P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글>  </P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글>  </P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><SPAN style="FONT-FAMILY: 굴림; COLOR: #f3720a; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림">           <STRONG><FONT color=#5d5d5d>■ 지르코니아 물성</FONT></STRONG></SPAN><SPAN style="FONT-FAMILY: 굴림; COLOR: #f3720a; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림"><STRONG><FONT color=#5d5d5d>    </P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글> <TABLE border=0 cellSpacing=0 cellPadding=0 width=593> <TBODY> <TR> <TD vAlign=top></TD></TR> <TR> <TD style="TEXT-ALIGN: left" vAlign=top> <P style="MARGIN-LEFT: 4em"> <TABLE border=0 cellSpacing=1 cellPadding=1 width=585 bgColor=#8f8080 align=left> <TBODY> <TR> <TD bgColor=#bfafaf height=25 colSpan=2> <DIV class=main_news2 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">구 분</SPAN></STRONG></DIV></TD> <TD bgColor=#bfafaf height=25> <DIV class=main_news2 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">측 정 치</SPAN></STRONG></DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">소 성 밀 도</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(g/㎤) </DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90</DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">굽 힘 강 도</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(kg/㎟)</DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90 </DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">파 괴 인 성</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(kg/㎟) </DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90</DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">영 율</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(kg/㎟) </DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90</DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">경 도</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(HRA)</DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90</DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">열팽창 계수</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(1/℃) </DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90</DIV></TD></TR> <TR> <TD bgColor=#e2dcdb height=30 width=178> <DIV class=style4 align=center><STRONG><SPAN style="FONT-SIZE: 10pt">열 전 도 율</SPAN></STRONG></DIV></TD> <TD bgColor=#ffffff height=30 width=178> <DIV class=style4 align=center>(cal/Cm.Sec.℃) </DIV></TD> <TD bgColor=#ffffff height=30> <DIV class=style4 align=center>5.90</DIV></TD></TR></TBODY></TABLE></P></TD></TR></TBODY></TABLE></P> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글> </P></FONT></STRONG></SPAN> <P style="LINE-HEIGHT: 120%; LAYOUT-GRID-MODE: char" class=바탕글><FONT color=#cc723d>          ●<SPAN style="FONT-FAMILY: 굴림; COLOR: #f3720a; FONT-SIZE: 9pt; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림"> 적 용 : Knife , 가위,Extrusion Dies , Cutting Tools, 산소농도 센서</SPAN><SPAN style="FONT-FAMILY: 굴림; COLOR: #f3720a; mso-fareast-font-family: 굴림; mso-hansi-font-family: 굴림"> </SPAN></FONT></P>