Multifunctional Wear and Corrosion Resistant Decorative Nanostructured Carbon-Base Coatings

Multifunctional wear and corrosion resistant decorative nanostructured carbon-base coatings were prepared by PACVD (Plasma Assisted Chemical Vapour Deposition) method on steel substrates. As the multifunctional coating the carbon-base, particularly DLC (Diamond-Like Carbon) nanolayer, was chosen. For the deposition of adherent DLC coating on steel substrate a very thin Si-O-C interlayer was applied in some cases. Deposition of DLC coating and Si-O-C interlayer was performed using dc plasma without additional heating and with the HMDSO (hexamethyldisiloxane) and methane as precursors. During coating growth with increasing of thickness of DLC nanolayer the colour of nanolayer is changed. Whole spectrum of attractive colours is obtained, what is possible to use to decorative purposes. Effect of film thickness on colour is following: The reference specimen (bare stainless steel) has a bright metallic sheen. In the order of increasing thickness, the DLC films produced by PACVD have colours as follows: dark violet at ~75 nm; medium blue at ~130 nm; golden light at ~170 nm; deep rose pink at ~240 nm; golden brown at ~320 nm; and soot black at ~1200 nm. Decorative coatings must be adherent and hard for good wear resistance. Adhesion was tested by scratchtester and microhardness was determined by nanoindentation. The microhardness data were thickness-dependent, influenced by substrate. The highest measured value was 23 GPa. Tribology of the coatings was assessed by wet friction tests.

Download Full-text

Modification of plasma sprayed wear and corrosion resistant coatings by high-density infrared heating

10.31274/rtd-180813-15841 ◽

2007 ◽

Author(s):

Rebecca Lynn Ahrens

Keyword(s):

High Density ◽

Infrared Heating ◽

Corrosion Resistant ◽

Wear And Corrosion ◽

Corrosion Resistant Coatings ◽

Plasma Sprayed

Download Full-text

CARPENTER CTS-204P ALLOY (MICRO MELT 20-4)

Alloy Digest ◽

10.31399/asm.ad.ss1051 ◽

2010 ◽

Vol 59 (1) ◽

Keyword(s):

Wear Resistance ◽

Volume Fraction ◽

Cold Work ◽

Heat Treating ◽

Corrosion And Wear ◽

Corrosion Resistant ◽

Die Steel ◽

Powder Metallurgy Process ◽

Wear And Corrosion ◽

Metallurgy Process

Abstract Carpenter CTS-204P (Micro Melt 20-4) alloy is a highly wear- and corrosion-resistant, air-hardening martensitic cold-work stainless die steel produced using Carpenter’s Micro-Melt powder metallurgy process. The excellent wear resistance of the alloy is provided by a significant volume fraction of hard vanadium-rich carbides, while the outstanding corrosion resistance of the alloy is obtained as a result of the chromium-rich matrix. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on corrosion and wear resistance as well as forming, heat treating, and machining. Filing Code: SS-1051. Producer or source: Carpenter Specialty Alloys.

Download Full-text

Functional protective coatings of nickel-based alloys

Voprosy Materialovedeniya ◽

10.22349/1994-6716-2018-93-1-110-114 ◽

2019 ◽

pp. 110-114

Author(s):

D. A. Gerashchenkov ◽

T. I. Bobkova ◽

A. F. Vasiliev ◽

P. A. Kuznetsov ◽

E. A. Samodelkin ◽

...

Keyword(s):

Environmental Influence ◽

Protective Coatings ◽

Cold Gas Dynamic Spraying ◽

Functional Elements ◽

Corrosion Resistant ◽

Gas Dynamic ◽

Precision Alloy ◽

Wear And Corrosion ◽

High Level ◽

Corrosion Resistant Coatings

A composition of a precision alloy based on the Ni–Cr–Mo system for wear and corrosion-resistant coatings by supersonic cold gas dynamic spraying has been developed. The optimum coatings composition provides high level of operational properties; its application is very promising for protection of structural and functional elements of marine equipment from aggressive environmental influence.

Download Full-text

Bioactivity, Wear and Corrosion Resistant Properties of Rare Earth/Calcium Phosphate Composite Coatings

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.368-372.1194 ◽

2008 ◽

Vol 368-372 ◽

pp. 1194-1197 ◽

Cited By ~ 1

Author(s):

Chen Ma ◽

Ying Hui Wang ◽

Mu Qin Li ◽

Li Jie Qu

Keyword(s):

Rare Earth ◽

Calcium Phosphate ◽

Composite Coatings ◽

Xrd Analysis ◽

Wear Properties ◽

Corrosion Resistant ◽

Phosphate Coatings ◽

Wear And Corrosion ◽

Micro Arc Oxidation ◽

Calcium Phosphate Coatings

Rare earth/calcium phosphate composite coatings were fabricated on the surface of Ti-6Al-4V by micro-arc oxidation (MAO) technique. The wear properties and corrosion resistant of rare earth/ calcium phosphate composite coatings in the simulated body fluid (SBF) have been investigated and the bioactivity of the composite coatings were evaluated. The results show that the friction coefficient of the composite coatings in the SBF is only 0.15~0.18 and the anode polarization potential of the coating has been obviously enhanced about 0.18V compared with that of coatings of calcium phosphate coatings. So the composite coatings have excellent wear and corrosion resistant properties. XRD analysis indicates that the composite coatings can induce hydroxyapatite to form on its surface after soaked in SBF for 9d, which shows that the composite coatings own good bioactivity.

Download Full-text