Effect of different oxides addition on the thermal expansion coefficients and residual stresses of Fe-based diamond composites
Source abstract
Abstract
Abstract CeO 2 , La 2 O 3 , Y 2 O 3 , and V 2 O 5 were added in an Fe-based matrix, and then the matrices were hot pressed at 700 °C. The thermal expansion coefficients and fracture stresses of the matrices were investigated, and residual stresses between the diamonds and matrices were simulated by finite element analysis. The weight losses of the specimens with diamonds were measured using a pin-on-disk wear testing rig. The surfaces from the wear tests were also examined by a scanning electron microscope. Results showed that the residual stress, difference of residual stress from fracture stress and weight loss all decreased after adding Y 2 O 3 , La 2 O 3 , V 2 O 5 , and CeO 2 , and the decrement increased in the same order. Among the four oxides, adding V 2 O 5 and CeO 2 remarkably improved the diamond retention capacity of the Fe-based matrix.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced materials and composites · Tunneling and Rock Mechanics · Diamond and Carbon-based Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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