振动样品磁强计（VSM）测试的应用

<p><span style="font-size: 12pt;"><span style="color: #236fa1;"><a style="color: #236fa1;" title="多功能样品强磁计（VSM)" href="https://www.kexingtest.com/instrument/detail?id=187" target="_blank" rel="noopener"><span style="max-width: 100%; font-family: arial; background-color: #ffffff;">振动样品磁强计（</span><span style="max-width: 100%; font-family: arial; background-color: #ffffff;">VSM</span></a></span><span style="max-width: 100%; font-family: arial; background-color: #ffffff;"><span style="color: #236fa1;"><a style="color: #236fa1;" title="多功能样品强磁计（VSM)" href="https://www.kexingtest.com/instrument/detail?id=187" target="_blank" rel="noopener"><span style="max-width: 100%;">）</span></a></span><span style="max-width: 100%;">是一种用于测量材料磁性的重要设备，广泛应用于各种铁磁、亚铁磁、反铁磁、顺磁和抗磁材料的磁特性研究中。</span></span></span></p> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 28px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;">一、工作原理</span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="color: #0b0b0b;"><span style="max-width: 100%;">振动样品磁强计（</span><span style="max-width: 100%;">VSM</span></span><span style="max-width: 100%;"><span style="max-width: 100%; color: #0b0b0b;">）</span><span style="max-width: 100%;">的工作原理基于法拉第电磁感应定律。当一个开路磁体置于磁场中时，检测线圈在样品外一定距离处感应到的磁通量可以被视为外部磁化场和由样品引起的扰动之和</span></span><span style="max-width: 100%;">；在大多数情况下，测量人员更关心这种扰动，为了区分这种扰动与环境磁场，可以通过让被测样品以一定方式振动，使检测线圈感应到的样品磁通量信号不断快速交变，保持环境磁场等其他量不变，这是一种利用交流信号测量磁性材料直流磁性的方法。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;">二、测试方法</span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">1. </span><span style="max-width: 100%;">磁化曲线测试：通过改变外部磁场强度，测量样品磁化强度与磁场强度之间的关系，得到磁化曲线。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">2. </span><span style="max-width: 100%;">磁滞回线测试：在一定磁场范围内，周期性地改变磁场方向，记录样品磁化强度与磁场强度之间的关系，得到磁滞回线。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">3. </span><span style="max-width: 100%;">退磁曲线测试：在一定磁场范围内，将样品磁化至饱和，然后逐步降低磁场强度，记录磁化强度与磁场强度之间的关系，得到退磁曲线。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">4. </span><span style="max-width: 100%;">升温曲线与升</span><span style="max-width: 100%;">/</span><span style="max-width: 100%;">降温曲线测试：在恒定磁场下，测量样品在不同温度下的磁化强度，得到升温曲线；在恒定磁化强度下，测量样品在不同温度下的磁场强度，得到升</span><span style="max-width: 100%;">/</span><span style="max-width: 100%;">降温曲线。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">5. </span><span style="max-width: 100%;">居里温度测试：通过测量样品在不同温度下的磁化强度，找到磁化强度降至零时的温度，即为居里温度。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">6. </span><span style="max-width: 100%;">矫顽力测试：在一定磁场范围内，通过测量样品从磁化至饱和所需的时间，计算矫顽力。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">7. </span><span style="max-width: 100%;">最大磁能积测试：在一定磁场范围内，改变磁场方向，记录磁能积与磁场强度之间的关系，得到最大磁能积。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;">三、应用领域</span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">1. </span><span style="max-width: 100%;">稀土永磁材料研究：振动样品磁强计可用于测量稀土永磁材料的磁性能，如磁化强度、矫顽力、磁能积等。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">2. </span><span style="max-width: 100%;">铁氧体材料研究：</span><span style="max-width: 100%;">VSM </span><span style="max-width: 100%;">可用于测量铁氧体材料的磁性能，如磁化强度、磁滞回线、退磁曲线等。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">3. </span><span style="max-width: 100%;">非晶和准晶材料研究：振动样品磁强计可用于测量非晶和准晶材料的磁性能，如磁化强度、磁滞回线、退磁曲线等。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">4. </span><span style="max-width: 100%;">超导材料研究：</span><span style="max-width: 100%;">VSM </span><span style="max-width: 100%;">可用于测量超导材料的磁性能，如磁化强度、磁滞回线、退磁曲线等。</span></span></p> </div> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">5. </span><span style="max-width: 100%;">合金、化合物及生物蛋白质的磁性研究：振动样品磁强计可用于测量各类物质的内禀磁特性，如磁化强度、居里温度、矫顽力等。</span></span></p> </div> <p> </p> <div class="dpu8C _2kCxD " style="max-width: 100%; overflow-x: visible; font-size: 18px; line-height: 30px; color: #222222; margin-top: 24px; font-family: arial; background-color: #ffffff;"> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"><span style="font-size: 12pt;"><span style="max-width: 100%;">6. </span><span style="max-width: 100%;">磁性粉末、颗粒、片状、块状材料的测量：</span><span style="max-width: 100%;">VSM </span><span style="max-width: 100%;">可用于测量不同形状的磁性材料的磁性能，如磁化强度、磁滞回线、退磁曲线等。</span></span></p> <p style="overflow-y: auto; max-width: 100%; line-height: 30px; color: #000000; overflow-wrap: break-word; padding: 0px !important; margin: 5px 0px !important 5px 0px !important;"> </p> </div>