Corrosion behavior of laser consolidated chromium and molybdenum plasma spray coatings on Fe-28Mn-7Al-1C alloy

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90488-X· OSTI ID:7167068

Tjong, S C ^[1]; Ku, J S ^[2]; Wu, C S ^[3]

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1. City Polytechnic of Hong Kong, Kowloon (Hong Kong)
2. National Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China)
3. Metal Industries Development Center, Kaohsiung (Taiwan, Province of China)

Plasma spraying is a versatile tool for applying protective coatings to engineering alloys. However, plasma-sprayed coatings exhibit a degree of porosity because the molten droplets deposited by the plasma process cool very rapidly and cannot completely wet the substrate. These pores are detrimental to the corrosion resistance of the coatings because the corrosive solutions can penetrate through them. It is effective to remelt and solidify coating for reducing these porosities by means of a high energy laser. The laser beams are coherent and intense and are capable of attaining very rapid rates of surface melting followed by rapid solidification. The present paper is a first report on the morphology and corrosion behavior of laser consolidated chromium and molybdenum plasma spray coatings on the Fe-Mn-Al-C alloy. In combination with its good mechanical properties, the laser modified Fe-Mn-Al-C alloy can now be considered as a candidate for replacing the Ni-Cr stainless steel.

• OSTI ID: 7167068
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:7; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM
COATINGS
CORROSION
DATA
DEPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IRON ALLOYS
IRON BASE ALLOYS
LASER RADIATION
MANGANESE ALLOYS
MANGANESE STEELS
METALS
MOLYBDENUM
MORPHOLOGY
NUMERICAL DATA
PLASMA ARC SPRAYING
PROTECTIVE COATINGS
RADIATIONS
SPRAY COATING
SPRAYED COATINGS
STEELS
SULFURIC ACID
SURFACE COATING
TRANSITION ELEMENTS