| 摘要 |
PROBLEM TO BE SOLVED: To provide a graphite tray used for sintering a product of cemented carbides or cermets, each having a thermally sprayed coating of an oxide on its surface, which is almost free from oxidation phenomenon at the interface between the coating and its surface even when the coating is prevented from becoming oxygen defect type and which thereby improves the durability of the coating. SOLUTION: A thermally sprayed coating of an oxide containing≥80 wt.% Yb<SB>2</SB>O<SB>3</SB>or a thermally sprayed coating of a Yb<SB>2</SB>O<SB>3</SB>-Y<SB>2</SB>O<SB>3</SB>multiple oxide containing≥50 wt.% Yb<SB>2</SB>O<SB>3</SB>is formed on a surface on which the product of the cemented carbides or the cermets is mounted and held. COPYRIGHT: (C)2004,JPO&NCIPI
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