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专利名称：Method for manufacturing heating element发明人：S. Wang申请号：US08/340198申请日：19941115公开号：US05478522A公开日：19951226
摘要：The present invention relates to a method for manufacturing a heating element,the method including the steps of: a) providing powders of two metals; b) mixing thepowders; c) grinding the mixed powders; d) compacting the mixed powders to form agreen compact; e) sintering the green compact in a first atmosphere; f) plasticallyworking and process annealing the green compact; g) etching a surface of the greencompact to cause pores thereon; and h) sintering the etched green compact in anoxidizing atmosphere. A Ni-Cr heating element manufactured by the present method hasimproved high temperature properties and a fusion temperature 300° C. greater thanthose of conventional Ni-Cr heating elements.
申请人：NATIONAL SCIENCE COUNCIL
代理机构：Christie, Parker & Hale
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