Title:
ETCHING SOLUTION FOR DETECTING MARTENSITE PHASE
Document Type and Number:
Japanese Patent JPS60138081
Kind Code:
A
Abstract:
PURPOSE: To obtain an etching soln. for detecting a martensite phase in a simple and sure manner by modifying conventional Frank with commercially available chemicals.
CONSTITUTION: To 100cc water are added 2W4g inorg. sodium sulfite and 0.3W 2g methylaminophenol, and they are stirred until the compounds are thoroughly dissolved to prepare a soln. A. To 100cc ethanol is added 2.5W3.5g picric acid, and they are stirred to prepare a soln. B. An etching soln. is obtd. by mixing the solns. A, B in 10:(1W1.5) ratio.
Inventors:
HASEBE MASARU
HIBINO TOSHIZOU
HIBINO TOSHIZOU
Application Number:
JP25033483A
Publication Date:
July 22, 1985
Filing Date:
December 26, 1983
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
C09K13/06; C23F1/28; C23F13/00; G01N1/32; (IPC1-7): C09K13/06; C23F1/28; G01N1/32