Dynamic abrasion resistance of coatings applied to engineering materials

Kennedy, David; Helali, Maksud; Hashmi, M.S.J.

doi:10.1016/0257-8972(94)90204-6

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…The resultant effect of both environmental factors should cause a significant wear increase, exceeding the sum of individual effects these factors trigger. This assumption has been confirmed in numerous papers, including by Kennedy et al [11] who addressed the impact-abrasion wear tests performed on coated and non-coated samples of aluminium, mild steel, and tool steel using a dedicated test rig. The experimental tests they conducted revealed higher wear rates under impact-abrasion conditions compared to contact-only abrasion.…”

Section: Introductionmentioning

confidence: 68%

Ni-Cu Alloyed Austempered Ductile Iron Resistance to Multifactorial Wear

Wieczorek

2024

Lubricants

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The paper provides a discussion on the results of studies of the effect exerted by combined degradation factors typical of four types of wear: abrasion, impact–abrasion, tribocorrosion, and impact–abrasion–corrosion, conducted for chain wheels made of Ni-Cu alloyed austempered ductile iron. The studies consisted of determining the content of retained austenite in the structure of the cast irons in question, establishing the measures of wear following wear testing, and identifying the basic surface degradation mechanisms observed in the chain wheels tested following multifactorial wear processes. The chain wheels made of ADI were found to have sustained the greatest damage under the impact–abrasion–corrosion (three-factor) wear scenario, while the wear was least advanced in the abrasion (one-factor) wear case. Another observation derived from the studies is that the combined effect of dynamic forces, corrosion, and quartz sand-based abrasives causes increased surface degradation in the cast iron grades taken into consideration compared to processes characterised by a reduced number of degradation factors (i.e., one- or two-factor wear processes). Additional hardness tests and XRD analyses revealed that a distinctive effect attributable to combined degradation factors on the surface hardness increased value and implied that bench testing was followed by phase transition.

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Section: Introductionmentioning

confidence: 68%

Ni-Cu Alloyed Austempered Ductile Iron Resistance to Multifactorial Wear

Wieczorek

2024

Lubricants

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“…Recent research and development in waterborne coatings have been directed towards stabilizing against changes that occur from induced shear and temperature, improving overall performance, and reducing the amount of organic co-solvents that are required. 24 Especially, the compatibility of methylated aminoplast with water makes them potential candidates for use in waterborne coatings. 3 The highly alkylated aminoplast offered a number of advantages over the conventional amino formaldehyde ones.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of crosslinkable waterborne polyurethanes containing aminoplast(I)

Kwon

Kim

2006

Macromol. Res.

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A series of crosslinkable, waterborne polyurethanes (I-WBPUs) were prepared by in-situ polymerization using isophorone diisocyanate (IPDI)/poly(tetramethylene oxide) glycol (PTMG, M n =2,000)/ dimethylol propionic acid (DMPA)/ethylene diamine (EDA)/triethylamine (TEA)/aminoplast [hexakis(methoxymethyl)melamine (HMMM)] as a crosslinking agent. Typical crosslinkable, waterborne polyurethanes (B-WBPUs) blended from WBPU dispersion and aqueous HMMM solution was also prepared to compare with the I-WBPUs. The crosslinking reaction between WBPU and HMMM was verified using FTIR and XPS analysis. The effect of the HMMM contents on the dynamic mechanical thermal, thermal, mechanical, and adhesion properties of the I-WBPU and B-WBPU films were investigated. The storage modulus (E'), glass transition temperatures of the soft segment (T gs ) and the amorphous regions of higher order (T gh ), melting temperature (T m ), integral procedural decomposition temperature (IPDT), residual weight, T 10% and T 50% (the temperature where 10 and 50% weight loss occurred), tensile strength, initial modulus, hardness, and adhesive strength of both I-WBPU and B-WBPU systems increased with increasing HMMM content. However, these properties of the I-WBPU system were higher than those of the B-WBPU system at the same HMMM content. These results confirmed the in-situ polymerization used in this study to be a more effective method to improve the properties of the WBPU materials compared to the simple blending process.

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“…There are generally two dominant thermal spray methods for WC-Co coating deposition: plasma spray and high velocity oxy-fuel (HVOF) process. The study on the WC-Co coatings has been conducted [1][2][3][4] towards a successful application in various industries. Generally, plasma spray was widely utilized owing mainly to economic considerations.…”

Section: Introductionmentioning

confidence: 99%

“…To date, there is no report on reversing W 2 C or W to WC after the coating deposition. Available attempts were focused on altering processes, e.g., HVOF [1], cold spray [3], and optimizing spray parameters [9]. A previous report revealed that spark plasma sintering (SPS), a rapid sintering technique, was capable of restoring WC in the plasma sprayed WC-Co coatings [11].…”

Section: Introductionmentioning

confidence: 99%

Microstructure modifications and phase transformation in plasma-sprayed WC–Co coatings following post-spray spark plasma sintering

Khor

et al. 2005

Surface and Coatings Technology

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Dynamic abrasion resistance of coatings applied to engineering materials

Cited by 11 publications

References 3 publications

Ni-Cu Alloyed Austempered Ductile Iron Resistance to Multifactorial Wear

Ni-Cu Alloyed Austempered Ductile Iron Resistance to Multifactorial Wear

Preparation and properties of crosslinkable waterborne polyurethanes containing aminoplast(I)

Microstructure modifications and phase transformation in plasma-sprayed WC–Co coatings following post-spray spark plasma sintering

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