NASA-LLIS-0439

Lessons Learned - Avoid Use of PFPE-based Lubricant on Moving Surfaces of Titanium (or Other Highly Reactive Metal) Bearings (1993)

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T17:37:27Z
date available	2017-09-04T17:37:27Z
date copyright	07/19/1996
date issued	1996
identifier other	DNBEQCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std/handle/yse/160302
description abstract	Abstract: A rotating prism motor aboard the TOPEX spacecraft experienced a sudden in-flight failure due to the use of perfluoropolyalkyether (PFPE) based lubricant on titanium bearings. Pure titanium debris produced by spalling of the motor shaft chemically reacted with the fluorocarbon-based lubricant, causing polymerization of the lubricant. Avoid the use of PFPE-based lubricants on titanium or other highly reactive bearing surfaces.
language	English
title	NASA-LLIS-0439	num
title	Lessons Learned - Avoid Use of PFPE-based Lubricant on Moving Surfaces of Titanium (or Other Highly Reactive Metal) Bearings (1993)	en
type	standard
page	3
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1996
contenttype	fulltext
subject keywords	Hardware
subject keywords	Parts Materials & Processes