Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Abnormal grain growth in sintered Nd-Fe-B magnets
View through CrossRef
Abnormal grain growth was found in sintered Nd-Fe-B magnets which are made from powder milled after hydrogen decrepitation. The abnormal grain size in the magnets sintered at 1000 °C for 1.5 h was as large as 400 μm. The formation of abnormally large grains reduced the magnetic properties. As sintering temperature increased, the number of large grains increased and coercivity reduced. However, abnormal grain growth was rarely found when the magnets were fabricated without hydrogen decrepitation. A grain growth mechanism is discussed in relation to the effect of hydrogenation and sintering process.
Title: Abnormal grain growth in sintered Nd-Fe-B magnets
Description:
Abnormal grain growth was found in sintered Nd-Fe-B magnets which are made from powder milled after hydrogen decrepitation.
The abnormal grain size in the magnets sintered at 1000 °C for 1.
5 h was as large as 400 μm.
The formation of abnormally large grains reduced the magnetic properties.
As sintering temperature increased, the number of large grains increased and coercivity reduced.
However, abnormal grain growth was rarely found when the magnets were fabricated without hydrogen decrepitation.
A grain growth mechanism is discussed in relation to the effect of hydrogenation and sintering process.
Related Results
Studies of sintered MRE-Fe-B magnets by DyF3 addition or diffusion treatment (MRE = Nd + Y + Dy)
Studies of sintered MRE-Fe-B magnets by DyF3 addition or diffusion treatment (MRE = Nd + Y + Dy)
Sintered MRE2(Fe, Co)14B magnets by DyF3 blending or diffusion treatment were investigated. “Base-line” magnets with a thickness of 1.5 mm were coated (painted) with DyF3 powder an...
Toughening Sm–Co Sintered Magnets Via Microstructure Modification with Additives
Toughening Sm–Co Sintered Magnets Via Microstructure Modification with Additives
The mechanical properties of the brittle Sm–Co permanent magnets are of great practical significance. However, studies on the magnets have mostly focused on their magnetic properti...
State and development of grain storage engineering and technologies in Ukraine
State and development of grain storage engineering and technologies in Ukraine
Topicality. These researches are due to the grain storage problem, the features of maize grain storage in metal silos under the various environmental factors, as well as more effic...
Silicon effect on sintered and tempered Fe-Mo-Si-C steel microstructure and mechanical property
Silicon effect on sintered and tempered Fe-Mo-Si-C steel microstructure and mechanical property
Silicon carbide was employed as a source of silicon and carbon to produce sintered silicon steels, offering the advantages of silicon addition. This work explored the effects of lo...
Macroeconomic and Social Precursors of Suicide Rates in the Philippines: A Quantitative Analysis (Preprint)
Macroeconomic and Social Precursors of Suicide Rates in the Philippines: A Quantitative Analysis (Preprint)
BACKGROUND
Suicide is a complex, serious and multifaceted public health issue that poses significant challenges to societies worldwide. In fact, it represen...
Blunt Chest Trauma and Chylothorax: A Systematic Review
Blunt Chest Trauma and Chylothorax: A Systematic Review
Abstract
Introduction: Although traumatic chylothorax is predominantly associated with penetrating injuries, instances following blunt trauma, as a rare and challenging condition, ...
Grain growth of ice doped with soluble impurities
Grain growth of ice doped with soluble impurities
Abstract. The grain size of polycrystalline ice affects key parameters related to the dynamics of ice masses, such as the rheological and dielectric properties of terrestrial ice f...
Influence of Perovskite Grain Size and TiO2 Surface States to the Performance of Perovskite Solar Cell
Influence of Perovskite Grain Size and TiO2 Surface States to the Performance of Perovskite Solar Cell
Introduction
Currently, perovskite solar cells (PSCs) have received great curiosity from solar cell field, due to rapid improvement in their photoele...