In this paper, first the in situ Cr2AlC MAX phase coating was applied on a substrate of IN-738 LC by spark plasma sintering, and then, the cyclic oxidation behavior of the Cr2AlC MAX phase coating on the IN-738 LC substrate exposed at 900, 1000, and 1100 °C for 100 h in the air was studied. After 100 h of oxidation, the mass gain of the coating in the temperature range of 900–1100 °C is, respectively, equal to <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12666_2025_3692_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="170" /> </InlineMediaObject> <EquationSource Format="TEX">$4/69 \times 10^{ - 4} ,6/4 \times 10^{ - 4}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>4</mn> <mo stretchy="false">/</mo> <mn>69</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>-</mo> <mn>4</mn> </mrow> </msup> <mo>,</mo> <mn>6</mn> <mo stretchy="false">/</mo> <mn>4</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>-</mo> <mn>4</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation>, and <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12666_2025_3692_Article_IEq2.gif" Format="GIF" Height="22" Rendition="HTML" Resolution="72" Type="Linedraw" Width="117" /> </InlineMediaObject> <EquationSource Format="TEX">$- 6/1 \times 10^{ - 3} \,\frac{{{\text{mg}}}}{{{\text{cm}}^{2} }}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>-</mo> <mn>6</mn> <mo stretchy="false">/</mo> <mn>1</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>-</mo> <mn>3</mn> </mrow> </msup> <mspace width="0.166667em" /> <mfrac> <mtext>mg</mtext> <msup> <mrow> <mtext>cm</mtext> </mrow> <mn>2</mn> </msup> </mfrac> </mrow> </math></EquationSource> </InlineEquation>. Increasing the oxidation temperature from 900 to 1000 °C raised the oxidation rate slightly; nevertheless, at 1100 °C, the oxidation rate decreased. It was observed that the Cr2AlC MAX phase carried out the protection at 900 and 1000 °C with the formation of the alumina oxide protective layer. However, at 1100 °C, the appearance of the coating was destroyed because of the crack formation and spallation in the oxide layer.

Cyclic Oxidation of Cr₂AlC Max Phase: Coating on Ni-Based Inconel-738 Low Carbon

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发表日期：

2025年8月29日

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Fatemeh Zakeri-Shahroudi,
Behrooz Ghasemi,
Mansour Razavi,
Hassan Abdollahpour

摘要

In this paper, first the in situ Cr₂AlC MAX phase coating was applied on a substrate of IN-738 LC by spark plasma sintering, and then, the cyclic oxidation behavior of the Cr₂AlC MAX phase coating on the IN-738 LC substrate exposed at 900, 1000, and 1100 °C for 100 h in the air was studied. After 100 h of oxidation, the mass gain of the coating in the temperature range of 900–1100 °C is, respectively, equal to $4/69 \times 10^{ - 4} ,6/4 \times 10^{ - 4}$ $4 / 69 \times 10^{- 4}, 6 / 4 \times 10^{- 4}$ , and $- 6/1 \times 10^{ - 3} \,\frac{{{\text{mg}}}}{{{\text{cm}}^{2} }}$ $- 6 / 1 \times 10^{- 3} \frac{mg}{{cm}^{2}}$ . Increasing the oxidation temperature from 900 to 1000 °C raised the oxidation rate slightly; nevertheless, at 1100 °C, the oxidation rate decreased. It was observed that the Cr₂AlC MAX phase carried out the protection at 900 and 1000 °C with the formation of the alumina oxide protective layer. However, at 1100 °C, the appearance of the coating was destroyed because of the crack formation and spallation in the oxide layer.

Cyclic Oxidation of Cr2AlC Max Phase: Coating on Ni-Based Inconel-738 Low Carbon

摘要

Cyclic Oxidation of Cr₂AlC Max Phase: Coating on Ni-Based Inconel-738 Low Carbon