C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/581 (2006.01) C04B 41/51 (2006.01) C04B 41/52 (2006.01) C04B 41/88 (2006.01) C04B 41/89 (2006.01) C23C 20/04 (2006.01)
Patent
CA 2252075
A sintered aluminum nitride body comprising aluminum nitride as the main component and containing a calcium compound, an ytterbium compound, and a neodymium compound. Due to the use of the above calcium-yttrium-neodymium ternary sintering aid, the sintered aluminum nitride body can be obtained by firing a compact of the raw material powder at a low temperature after degreasing the compact without cracking and has evenness of in color, strength and thermal conductivity. The sintered aluminum nitride body provides an inexpensive, high-quality metallized substrate for electronic parts by forming a high-melting metallizing layer of W and/or Mo. Onto the aluminum nitride body, an Ag metallizing layer including oxides of Zn and Cu or an Ag-Pd metallilzing layer including oxides of B, Pb, Cr and Ca and, if necessary, further an insulating vitreous layer may be formed.
Nakata Hirohiko
Natsuhara Masuhiro
Sasaki Kazutaka
Tanaka Motoyuki
Yushio Yasuhisa
Marks & Clerk
Sumitomo Electric Industries Ltd.
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