Accession Number : AD0629015

Title :   NITRIDING AND CARBONITRIDING OF TITANIUM METAL AND ITS ALLOYS.

Descriptive Note : Final technical rept.,

Corporate Author : TOUR (SAM) AND CO INC NEW YORK

Personal Author(s) : Silk,Edmond J.

Report Date : 12 MAY 1952

Pagination or Media Count : 44

Abstract : The equipment used for nitriding experiments on titanium and its alloys is described. The results of experiments on RC-55 ductile titanium and several higher strength alloys are described. Treating titanium and its alloys in an ammonia atmosphere produces a hard and adherent case. The minimum temperature at which surface hardening of any appreciable magnitude occurs is 1600F and the optimum minimum time of treatment appears to be 16 hours. Comparative tests with tank nitrogen indicates similar results can be obtained, but at a minimum temperature of 1800F. Commercially pure ductile titanium RC-55 suffers a loss in hardness if the time of treatment is extended beyond 16 hours, whereas the higher strength alloys do not lose hardness. (Author)

Descriptors :   (*CASE HARDENING, TITANIUM), (*TITANIUM, CASE HARDENING), (*TITANIUM ALLOYS, CASE HARDENING), CONTROLLED ATMOSPHERES, AMMONIA, TEMPERATURE, TIME, NITROGEN, HARDNESS, SURFACE PROPERTIES

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE