On the Some Properties of TiN2.-Ni Powder Compacts Sintered by Using the Nickel Plated Composite Powders

Mikio Fukuhara, Kazuhiko Tsutsumi, Hirovasu Mitani

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

By using chemically nickel plated TiNXComposite powders, we carried out an examination of sintering characteristics in order to improve the sintering effect, and also investigated some properties of sintered compacts showing maximum sintered density. The results obtained were as follows: (1) The shrinkage of Ni-plated TiNx powder compacts was remarkably promoted, whereas the Ni concentration and x in formula TiNX, showing the maximum density ratio and hardness of sintered compacts in the sintering condition at 1400°C for 3 hr., were approximately 23 wt%, x=0.75 and 18 wt%, x=0.75, respectively. Titanium nitride showed its maximum hardness near substoichiometric composition of TiNO.78. (2) The Corrosion resistance in nitric acid at 25°C of TiNO.75-23.4 wt%Ni sintered alloy was comparable to that of stainless steel, Hastelloy, Inconel and cobalt-based cemented carbide, but in concentrated hydrochloric acid it was inferior to Hastelloy and Inconel. (3) Oxidation resistance of TiNO.75-23.4 wt%Ni sintered alloy in air at 700~1000OC was superior to that of TiC-Ni alloy. (Received April 18, 1979).

Original languageEnglish
Pages (from-to)17-22
Number of pages6
Journaljournal of the japan society of powder and powder metallurgy
Volume27
Issue number1
DOIs
Publication statusPublished - 1980 Jan 1

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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