Crevice corrosion behaviors of CoCrMo alloy and stainless steel 316L artificial joint materials in physiological saline

Abstract The microstructure of arc sprayed stainless steel 316L coatings appears mainly in bright white matrix, deteriorated layers (grey), and black pores under optical microscopy. The black pores and the chromium-depleted areas in the deteriorated layers are known as the factors for decreasing the ability of protecting substrate under corrosive environments. Results of experiments in this paper suggests, in the condition of this study besides the factors mentioned above, Fe-Cr oxides should be another factor of dominating the corrosion resistance in the coatings. It also describes that the quantity and the distributions of such oxides are great influence on the corrosion behaviors. In this study, two kinds of coatings were used, one with thick deteriorated layers and another with thin deteriorated layers, which were sprayed on mild steel substrate by air atomization and nitrogen atomization respectively. Salt spray test and salt-water dip test were carried out to investigate corrosion behavior in macro and micro view. An effect of sealing treatment on the performance of the coatings was also examined. Results of metallographic examination and image processing analysis are well supported by a detailed investigation of corrosion behaviors of individual phases.

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BÖHLER A911SA EXTRA

Alloy Digest ◽

10.31399/asm.ad.ss1119 ◽

2012 ◽

Vol 61 (4) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

High Temperature ◽

Physical Properties ◽

Stress Corrosion Cracking ◽

Crevice Corrosion ◽

Heat Treating ◽

Temperature Performance ◽

Resistance To Stress ◽

Specialty Metals

Abstract Böhler (or Boehler) A911 is a super duplex ferritic-austenitic chromium-nickel-molybdenum stainless steel with excellent resistance to stress-corrosion cracking, pitting, and crevice corrosion. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SS-1119. Producer or source: Böhler-Uddeholm Specialty Metals Inc..

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SEA CURE

Alloy Digest ◽

10.31399/asm.ad.ss0364 ◽

1979 ◽

Vol 28 (5) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Ferritic Stainless Steel ◽

High Resistance ◽

Brackish Water ◽

Crevice Corrosion ◽

Heat Treating

Abstract SEA-CURE is a ferritic stainless steel designed to provide high resistance to pitting and crevice corrosion in condensers cooled by saline or brackish water. It is used for condenser tubes and has great potential for many other uses. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-364. Producer or source: Trent Tube.

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URANUS 52N

Alloy Digest ◽

10.31399/asm.ad.ss0566 ◽

1994 ◽

Vol 43 (5) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Flue Gas ◽

Crevice Corrosion ◽

Heat Treating ◽

Flue Gas Desulfurization ◽

Temperature Performance ◽

Aisi Type ◽

Better Than

Abstract URANUS 52N is a nitrogen-alloyed duplex stainless steel improved in stress-corrosion cracking resistance and with pitting and crevice corrosion resistance better than AISI Type 317L. Applications include handling phosphoric acid contaminated with chlorides and in flue gas desulfurization scrubbers. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-566. Producer or source: Creusot-Marrel.

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BOEHLER A965

Alloy Digest ◽

10.31399/asm.ad.ss0994 ◽

2007 ◽

Vol 56 (7) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Stress Corrosion Cracking ◽

Crevice Corrosion ◽

Heat Treating ◽

Temperature Performance ◽

Resistance To Stress ◽

Specialty Metals

Abstract Boehler A965 is a superaustenitic Cr-Ni-Mo stainless steel with excellent resistance to stress-corrosion cracking, pitting, and crevice corrosion. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-994. Producer or source: Böhler-Uddeholm Specialty Metals Inc.

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NAS 64

Alloy Digest ◽

10.31399/asm.ad.ss1072 ◽

2010 ◽

Vol 59 (8) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

Stress Corrosion ◽

Duplex Stainless Steel ◽

Stress Corrosion Cracking ◽

Crevice Corrosion ◽

Heat Treating ◽

Duplex Microstructure ◽

Resistance To Stress

Abstract NAS 64 is a duplex stainless steel with molybdenum for pitting and crevice corrosion resistance and a duplex microstructure for resistance to stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1072. Producer or source: Nippon Yakin Kogyo Company Ltd.

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NAS 74N

Alloy Digest ◽

10.31399/asm.ad.ss1070 ◽

2010 ◽

Vol 59 (7) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

Crevice Corrosion ◽

Heat Treating ◽

Super Duplex Stainless Steel ◽

Duplex Microstructure ◽

Temperature Performance ◽

Resistance To Stress ◽

Very High

Abstract NAS 74N is a super duplex stainless steel with very high molybdenum for pitting and crevice corrosion resistance and a duplex microstructure for resistance to stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1070. Producer or source: Nippon Yakin Kogyo Company Ltd.

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