ISO 21713:2020标准规定了一种测定高温下陶瓷弹性模量的方法，即薄壁C环法。该方法适用于先进陶瓷，如氧化铝、氮化硅、碳化硅等。该标准旨在提供一种可靠的方法，以测定高温下陶瓷的弹性模量，以便在设计和制造先进陶瓷部件时使用。

该标准要求使用薄壁C环进行测量。薄壁C环是一种环形试样，其截面为C形，壁厚较薄。在测量过程中，将薄壁C环放置在高温环境中，然后施加一定的载荷，测量其变形量。通过测量载荷和变形量，可以计算出陶瓷的弹性模量。

该标准要求在测量过程中，需要控制温度和载荷的稳定性。为了确保测量结果的准确性，需要进行多次测量，并计算平均值。此外，还需要对测量结果进行统计分析，以确定其可靠性和精度。

该标准适用于先进陶瓷的弹性模量测量，可以用于制造先进陶瓷部件的设计和制造过程中。该标准的实施可以提高先进陶瓷部件的质量和性能，促进先进陶瓷技术的发展。

相关标准
ISO 14704-1:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of ceramic composites at high temperature under air — Part 1: Determination of tensile properties
ISO 14704-2:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of ceramic composites at high temperature under air — Part 2: Determination of compressive properties
ISO 14704-3:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of ceramic composites at high temperature under air — Part 3: Determination of shear properties
ISO 14704-4:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of ceramic composites at high temperature under air — Part 4: Determination of flexural properties
ISO 14705:2014 Fine ceramics (advanced ceramics, advanced technical ceramics) — Determination of thermal expansion coefficient of ceramic composites by push-rod dilatometry