Some thoughts on the construction of erosion–corrosion maps for PVD coated steels in aqueous environments

Stack, Margaret; Wang, H.W; Münz, W.‐D.

doi:10.1016/s0257-8972(98)00818-4

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…Amongst these rigs are slurry pot erosion tester [4][5][6][7][8][9], jet impingement rig [10][11][12][13][14], Coriolis erosion tester [15][16][17], pipe flow loop [18,19] and rotating cylinder apparatus [20][21][22]. Each rig has its advantages and disadvantages in terms of ease of usage, cost, ease of maintenance and control of test parameters.…”

Section: Introductionmentioning

confidence: 99%

Erosion–corrosion resistance of engineering materials in various test conditions

Rajahram

Harvey

Wood

2009

Wear

166

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a b s t r a c tErosion-corrosion is a complex phenomenon which involves the interaction between the mechanical processes of solid particle erosion and the electrochemical processes of corrosion. A whole range of issues is faced by a designer when trying to obtain relevant information on erosion-corrosion performance of a material. Amongst the constraints are the dispersed test conditions and test rigs available in the literature making comparisons and quantifying erosion-corrosion wear rates of different materials very difficult. The aim of this work is to evaluate the repeatability of erosion-corrosion experiments and to investigate the role of different parameters influencing erosion-corrosion. The materials tested in this work are stainless steel (SS316L/UNS S31603), carbon steel (AISI 1020/UNS G10200) and nickel-aluminium bronze (NAB/UNS C63200). A slurry pot erosion tester was used as the test apparatus and test parameters such as erodent size, erodent concentration, flow velocity and test solutions were varied to study their effect on erosion-corrosion. SEM analysis showed that a similar erosion-corrosion mechanism is seen for SS316L and NAB with formation of multiple extruded lips and platelets typically seen for erosion dominated material. In contrast the surface of AISI 1020 revealed the formation of craters, pits and shallow indentations which suggests that corrosion mechanism has a dominant influence on the material. Error rates in tests were found to have an average of 5.5% which are relatively low indicating good repeatability of test measurements and data from the test rig. The erosion-corrosion resistance of AISI 1020, SS316L and NAB were compared and it was found that SS316L showed the lowest erosion-corrosion mass loss rates in all test conditions followed by NAB and then AISI 1020. However in terms of synergistic ranking, NAB showed the best resistance to the combined action of erosion and corrosion with the highest negative synergy value. Positive synergy was evident for AISI 1020 in 3.5% NaCl and SS316L in 0.3 M HCl. A wear map is presented to evaluate erosion-corrosion trends of the materials. This work combines the assessment of test repeatability, variation in test conditions and comparison of material performance which are key stages in a material selection process.

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Section: Introductionmentioning

confidence: 99%

Erosion–corrosion resistance of engineering materials in various test conditions

Rajahram

Harvey

Wood

2009

Wear

166

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“…La unión de estos procesos genera un estado de sinergismo que generalmente acelera la degradación en las superficies. Actualmente, los trabajos científicos sobre el comportamiento de erosión-corrosión de recubrimientos duros son escasos y básicamente están orientados al estudio de películas en monocapas de TiN y CrN y multicapas de TiN/AlTiN y CrN/ NbN [2,[4][5][6][7][8][9].…”

Section: Introductionunclassified

Comportamiento de corrosión-erosión en recubrimientos de NbN depositados mediante sputtering magnetrón

Cáceres

Olaya

Alfonso

2012

Ingeniare. Rev. chil. ing.

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En la nueva generación de recubrimientos de uso industrial se incluye el nitruro de niobio (NbN) debido a sus propiedades fisicoquímicas tales como: alta conductividad eléctrica, buenas propiedades mecánicas, alto punto de fusión e inercia química y además por ser un superconductor con temperatura crítica de 16 K. En este trabajo se reporta el efecto del sinergismo corrosión y erosión sobre recubrimientos de NbN depositados sobre acero inoxidable 304 y silicio usando los sistemas de sputtering con magnetrón balanceado y desbalanceado. Los experimentos de erosión-corrosión se estudiaron en un sistema que varió la velocidad y el ángulo de impacto de las partículas de erosión. Para ello se utilizó un lodo de partículas de SiO 2 en una solución de 0,5M de H 2 SO 4 + 3,5% NaCl y una concentración de 30% en peso de partículas de SiO 2. La microestructura, morfología y composición química de las películas fueron analizadas con difracción de rayos X (DRX), microscopia electrónica de barrido (MEB) y espectroscopia de fotoelectrones generados por rayos X (EFRX), respectivamente. Los resultados muestran que la resistencia a la erosión-corrosión de los recubiertos de NbN fue superior al sustrato y los mecanismos de desgaste sobre el recubrimiento dependen del ángulo de impacto y la velocidad de las partículas de erosión. Posibles razones de este comportamiento son discutidas en este trabajo. Palabras clave: Corrosión, erosión, sputtering, nitruro de niobio, acero inoxidable.

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Erosion–corrosion wear of Cr/CrN multi-layer coating deposited on AISI-304 stainless steel using the unbalanced magnetron (UBM) sputtering system

Alegría-Ortega

Ocampo-Carmona

Suárez-Bustamante

et al. 2012

Wear

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Some thoughts on the construction of erosion–corrosion maps for PVD coated steels in aqueous environments

Cited by 7 publications

References 8 publications

Erosion–corrosion resistance of engineering materials in various test conditions

Erosion–corrosion resistance of engineering materials in various test conditions

Comportamiento de corrosión-erosión en recubrimientos de NbN depositados mediante sputtering magnetrón

Erosion–corrosion wear of Cr/CrN multi-layer coating deposited on AISI-304 stainless steel using the unbalanced magnetron (UBM) sputtering system

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