A downhole component including a first portion; a second portion; a controlled failure structure between the first portion and second portion. A method for improving efficiency in downhole components.

A downhole component including a first portion; a second portion; a controlled failure structure between the first portion and second portion. A method for improving efficiency in downhole components.

The invention relates to a sintered metal material comprising at least one magnetic part, characterised by directional through-pores having a size of between 1 and 100 μm, said material having a density varying by less than 20% from one sample of 1 cm3 to another taken from a one-piece part made from the material.

The invention relates to a sintered metal material comprising at least one magnetic part, characterised by directional through-pores having a size of between 1 and 100 μm, said material having a density varying by less than 20% from one sample of 1 cm3 to another taken from a one-piece part made from the material.

An inspection system for in situ evaluation of an additive manufacturing (AM) build part is provided. The inspection system comprises a build plane induction coil sensor configured and positionable so that during construction of the build part, the sensor's magnetization and sensor coils surround at least the last-produced layer of the AM build part in the build plane. The inspection system further comprises an energization circuit and a central processing system. The central processing system comprises a communication processor configured for sending command signals to the energization circuit and receiving impedance data from the build plane induction coil sensor, and energization controller configured for determining energization commands for transmission to the energization circuit, and an induction data analyzer configured for processing build part impedance data using complex impedance plane analysis and for identifying anomalies in the AM build part.

An inspection system for in situ evaluation of an additive manufacturing (AM) build part is provided. The inspection system comprises a build plane induction coil sensor configured and positionable so that during construction of the build part, the sensor's magnetization and sensor coils surround at least the last-produced layer of the AM build part in the build plane. The inspection system further comprises an energization circuit and a central processing system. The central processing system comprises a communication processor configured for sending command signals to the energization circuit and receiving impedance data from the build plane induction coil sensor, and energization controller configured for determining energization commands for transmission to the energization circuit, and an induction data analyzer configured for processing build part impedance data using complex impedance plane analysis and for identifying anomalies in the AM build part.

A component includes a multiplicity of individual powder particles of Mo, a Mo-based alloy, W or a W-based alloy that have been fused together to give a solid structure by a high-energy beam via an additive manufacturing method. The component has an oxygen content of not more than 0.1 at %. An additive manufacturing method includes producing the powder via the melt phase and providing a carbon content in the region of not less than 0.15 at %. The components are crack-free and have high grain boundary strength.

A component includes a multiplicity of individual powder particles of Mo, a Mo-based alloy, W or a W-based alloy that have been fused together to give a solid structure by a high-energy beam via an additive manufacturing method. The component has an oxygen content of not more than 0.1 at %. An additive manufacturing method includes producing the powder via the melt phase and providing a carbon content in the region of not less than 0.15 at %. The components are crack-free and have high grain boundary strength.

The present disclosure relates generally to a method for improving the performance of sintered NdFeB magnet. A method of preparing a sintered NdFeB magnet therefore comprises the steps of: a) preparing alloy flakes from a raw material of the NdFeB magnet by a strip casting process; and b) preparing a coarse alloy powder from the alloy flakes by a hydrogen decrepitation process, the hydrogen decrepitation process including treatment of the alloy flakes under a hydrogen pressure of 0.10 MPa to 0.25 MPa for a duration of 1 to 3.5 hours, then degassing the hydrogen at a predetermined temperature between 300° C. to 400° C. for a duration time of 0.5 to 5 hours, and then mixing the resulting coarse alloy powder with a lubricant.

The present disclosure relates generally to a method for improving the performance of sintered NdFeB magnet. A method of preparing a sintered NdFeB magnet therefore comprises the steps of: a) preparing alloy flakes from a raw material of the NdFeB magnet by a strip casting process; and b) preparing a coarse alloy powder from the alloy flakes by a hydrogen decrepitation process, the hydrogen decrepitation process including treatment of the alloy flakes under a hydrogen pressure of 0.10 MPa to 0.25 MPa for a duration of 1 to 3.5 hours, then degassing the hydrogen at a predetermined temperature between 300° C. to 400° C. for a duration time of 0.5 to 5 hours, and then mixing the resulting coarse alloy powder with a lubricant.