Possibility of the Abrasive Wear Resistance Determination with Scratch Tester

Abstract

Abrasion wear resistance is very important in many applications and it is not a surprise that there are many laboratory test methods for its determination. In this article, a possibility of the abrasive wear resistance determination with scratch tester, as a relatively easy and quick test method, was analysed and compared with the standard test method for pin abrasion testing (ASTM G 132). Materials used in the tests were: two ferrous-based coatings (deposited on an Al-Si alloy substrate with atmospheric plasma spraying), two aluminium-based composite materials with 10 wt% of Al 2 O 3 reinforcements (produced with compocasting technique) and grey cast iron, known as a material with good abrasive wear resistance. Coefficient of friction and wear of the samples were investigated with both abrasion wear test methods and analysed in correlation with their mechanical properties.

A novel multi-pass dual-indenter scratch test to unravel abrasion damage formation in construction steels

“…The scratch test, sliding a rigid indenter of controlled shape under a controlled load and speed against a smooth surface, mimics the abrasion process and has been used to evaluate the abrasion resistance of various microstructures [17][18][19]. However, the conventional scratch tests are mostly done on the initial surface [20][21][22][23][24], which can be very different to those that form during the abrasion process, e.g.…”

Uso Do Ensaio De Riscamento Linear Para Caracterização De Superfícies Tratadas Termoquimicamente: Uma Abordagem Multiescala

“…Mesmo que a outra componente do atrito, responsável pela adesão, seja tomada como constante (tal como descrito na referência [11]), o desconhecimento do ângulo de ataque de uma partícula torna a definição complexa do ponto de vista prático. Finalmente, como fechamento dos conceitos básicos, destaca-se o trabalho de Vancl et al [14], o qual mostra que a formação de bordas (A1) é determinante na relação entre os resultados de resistência ao riscamento (contato singular) com a resistência ao desgaste abrasivo (múltiplos contatos). O principal resultado destes autores está apresentado na Figura 3.…”

“…Fator de desgaste (mm 3 /Nm x 10 -2 ) medido em ensaio de riscamento linear e sua correlação com o mesmo fator medido em ensaio pino-contra-lixa, segundo duas metodologias de cálculo. Adaptado de [14]. Pontos pretos: cálculo de volume considerando apenas área do sulco.…”

Optimisation of maintenance concept choice using risk-decision factor – a case study

“…Failure consequence is expressed through the general assessment (Vencl, Manic, Popovic, and Mrdak 2010), which also considers whether the failure in question affect neighbouring machines in the production process (if there are any) -the so-called 'domino effect'. If there is no such effect, the allotted assessment is reduced by 1.…”