发明名称 |
CERAMIC HEATER |
摘要 |
Aluminum nitride, silicon nitride or silicon carbide is employed as the main component forming a substrate for increasing mechanical strength and improving thermal shock resistance, a proper additive is blended for controlling thermal conductivity and a temperature gradient from a heating element to an electrode is loosened for providing a dimensional ratio of the substrate effective for preventing oxidation of a contact between an electrode of the heating element and a connector of a feeding part. In a ceramic heater having an electrode and a heating element formed on the surface of a ceramic substrate, A/B ~ 20 is satisfied assuming that A represents the distance from a contact between a circuit of the heating element and the electrode to an end of the ceramic substrate closer to the electrode and B represents the thickness of the ceramic substrate, and the thermal conductivity of the ceramic substrate is adjusted to 30 to 80 W/m~K.
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申请公布号 |
CA2330885(C) |
申请公布日期 |
2003.03.18 |
申请号 |
CA20012330885 |
申请日期 |
2001.01.11 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
NATSUHARA, MASUHIRO;NAGAO, SYUNJI;NAKATA, HIROHIKO |
分类号 |
B23K3/03;C04B35/565;C04B35/581;C04B35/584;H05B3/02;H05B3/10;H05B3/14;(IPC1-7):H05B3/10 |
主分类号 |
B23K3/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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