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MFT-4000多功能材料表面性能试验仪

来源:  华汇仪器   作者:  admin   时间:  2018-10-21 11:14  点击:  

 

        近十多年来,材料表面的研究在国防、科技、工业、农业领域得到广泛应用,特别是离子镀涂层在工具、模具、仪器部件、装饰等方面的应用,收到了很大的经济效益和社会效益。因此,涂层的各项机械性能的检测是当前涂层产品开发的关键,涂层产品的各项技术指针也成为供需双方首先关注的焦点。当前硬质涂层机械性能的常规检测有硬度检测、结合力检测、摩擦性能和耐磨强度检测、粗糙度检测、弹性模量检测、厚度检测等。MFT-4000多功能材料表面性能试验仪运用摩擦力检测技术、声发射检测技术、位移测量技术及微机自控技术,实现了在一台仪器上对材料表面多项机械性能的检测。

                                   


 
工作原理
多功能材料表面性能试验机
        多功能材料表面试验机以组件的方式实现了对材料的多种机械性能检测。具有压痕试验、划痕试验、往复摩擦试验、粗糙度检测、弹性模量检测、台阶仪。
压痕试验模式:
        用来检测涂层与基体的结合力的临界载荷。通过金刚石压头逐渐增大载荷作用于试样表面,通过显微镜观察压痕变化,当压痕周围出现较大裂纹时,表明涂层的结合力失效,此时的载荷为涂层结合力的临界载荷。

              (压痕标准)                             (压痕曲线)
 

                                         
划痕试验:
         用来检测涂层与基体的结合力的临界载荷。通过自动加载机构将负荷连续加至划针(金刚石压头)上,同时移动试样,使划针划过涂层表面,通过各传感器获取涂层脱落时的声发射信号和摩擦力变化信号,得到涂层与基体的结合力的临界载荷。

       


                               (划痕形貌图)                          
  

                                (划痕形貌)


                  (划痕立体形貌)

往复摩擦试验模式:
         用来检测材料表面或涂层的摩擦系数和磨损率(耐磨强度)。运用球-盘、销-盘摩擦原理,将砝码或可变载入机构加至磨球上,材料试样随试验台以设定的速度、频率,实现动态加载或固定加载下摩擦副(点-面、线-面、面-面)的往复匀速直线运动,通过传感器获取摩擦时的摩擦力信号,经过计算机运算得到材料表面在特定条件(不同载荷、不同速度)下的摩擦系数曲线。

       
       



                            (双向采集摩擦)                             (单项采集摩擦)
                                                        

                                                                              (磨斑)

粗糙度试验模式:
        用来检测材料表面的粗糙度。将微小载荷(0.05N)施加划针上,作用于试样表面,试样以匀速直线运动,通过位移传感器得到划针的微小波动,经过计算机处理得材料表面的粗糙度。
 

         (粗糙度组件)                     (粗糙度曲线)

       

弹性模量检测:
      用来检测材料表面或涂层的弹性模量。将载荷按设定的加载速率由压头作用于试样表面,通过位移传感器,经过计算机处理得到材料的载荷-深度曲线,再按设定的卸除速率得到卸除时的载荷-深度曲线,通过两组数据经过计算得到材料的弹性模量。

         (弹性模量曲线)                      (弹性模量组件)

 
台阶仪:
         用来检测涂层的厚度。将微小载荷(0.05N)施加划针上,作用于涂层表面,试样以匀速直线运动,通过位移传感器得到划针的微小波动,经过计算机处理得到涂层和基体的落差曲线,由此得到涂层的厚度。
 

            (台阶曲线)                      (台阶立体形貌)
磨损量:
        用来检测材料表面的磨痕截面积。将微小载荷(0.05N)施加划针上,作用于涂层表面,试样以匀速直线运动,通过位移传感器得到划针的微小波动,经过曲线处理得到磨痕截面积,通过计算得到磨损体积。

 
   


                   (磨损量曲线)
仪器主要技术指标
压痕试验:
1.  加载方式:自动加载
2.  加荷范围:0.25N~300N、精度0.25N
3.  加荷速率: 10N/min~100N/min
4.  测量范围:0.5μm~100μm
5.  压    头:金刚石、锥角90°、尖端半径0.1mm(也可用其他规格)
6.  数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
划痕试验:
1.  加载方式:自动加载
2.  加荷范围: 0.25N~200N自动连续加荷、精度0.25N
3.  划痕长度: 2mm~40mm
4.  加荷速率: 10N/min~100N/min        
5.  测量范围:0.5μm~30μm
6.  摩擦力测量范围:10N~100N、精度0.25N
7.  压    头:金刚石、锥角120°、尖端半径0.2mm
8.  数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
往复摩擦:
1.   载入范围:0.5N~300N,自动加载,精度0.25N
2.   加载速率:10N/min~100N/min
3.   升降高度:20mm
4.   行    程:5mm~40mm
5.   往复速度:1 mm/min ~240mm/min,精度±0.1mm
6.   摩擦副夹具:Φ3mm、Φ4mm 、Φ5mm、Φ6mm
7.   摩 擦 副:GCr15钢球、AlO陶瓷球、ZrO 陶瓷球、SiN陶瓷球
8.   接触形式:点-面、线-面(可选)、面-面(可选)
9.   温   度:室温~300℃(可选)
10. 数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
粗糙度 
1. 试验载荷:5g~10g
2. 移动速度:1mm/s~4mm/s
3. 测量范围:1μm~200μm
4. 分 辨 率:±0.02μm
5. 压   头:金刚石、锥角90°、尖端半径0.1mm
6. 粗 糙 度:Ra、Rz
7. 数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
弹性模量检测:
1.  加载方式:自动加载
2.  载    荷: 0.5N~300N、精度0.25N
3.  加荷速率: 10N/min~100N/min
4.  测量范围:>5μm
5.  分 辨 率:±0.02μm
6.  压    头:金刚石立方角压针(三棱锥形)
7.  数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
台阶仪: 
1.  移动速度:1mm/s~4mm/s
2.  测量范围:1μm~200μm
3.  试样厚度:1mm~10mm
4.  分 辨 率:±0.02μm
5.  压   头:金刚石、锥角90°、尖端半径0.1mm
6.  数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
 
磨损量: 
1.  载    荷:5g~10g
2.  移动速度:1mm/s~4mm/s
3.  测量范围:2μm~200μm
4.  试样厚度:1mm~10mm
5.  分 辨 率:±0.02μm
6.  压   头:金刚石、锥角90°、尖端半径0.1mm
7.  磨 损 率:磨痕截面积mm2(磨损体积/牛·分钟)
8.  数 据 处理:生成Access、Excel数据库文件,Word实验报告,Jpeg图片
   

MFT-4000 Multi-functional Tester for Material Surface Properties

      Over the past decades, the research on material surface has been widely used in national defense, science and technology, industry and agriculture, especially the applications of ion-plating coatings in tools, molds, instrument parts, decoration and etc. has received a lot of economical and social benefits. Therefore, the evaluations of the mechanical properties of the coating are becoming the key to the current coating product-development,and various technical standards of coating products have become the focus of both supply and demand.
Principle of operations:
     The testing of a variety of mechanical properties of the material is achieved by using different components. Different tests such as the indentation test, scratch test, reciprocating friction test, elastic modulus test and roughness measurement can be carried out in this machine.

The indentation test mode:

     It is used to measure the critical load of the adhesive force between the coating and the substrate. The increasing load is applied on the surface of the substrate through the diamond indenter, now the load will be named the critical load which was observed by microscope around the indentation and indicated the failure of adhesive force.

Scratch test:

Reciprocating friction test mode:

     It is used to measure the friction coefficient and wear rate (abrasion resistance) of the coating. Based on the ball-on-disk principle, the weights or variable loading mechanism were applied on the grinding balls, the material sample is fixed on the test stand and the friction pairs can realize the reciprocating uniform linear motion with fixed speed and frequency under dynamic loading or fixed-loaded. The friction coefficient curve under the specific conditions (varied loads and speeds) will be obtained by computing the friction force signal collected by the sensor.

Roughness test mode:

     It is used to evaluate the roughness of the material surface. A micro load (0.05 N) is applied on the stylus which acts on the surface of the coating, while the sample is moved with uniform motion in a straight line. The roughness can be obtained by analyzing the slight fluctuations of the stylus measured through the displacement sensor

The test of elasticity modulus:

     It is used to measure the elasticity modulus of the material surface or coating. The loads are applied on the surface of sample with a double set of loading and unloading rate,the load-depth and unload-depth curve will be obtained by processing the data collected through the displacement sensor. Comparing two sets of data,the modulus of elasticity of the material will be obtained by calculation.

Profilometer:

     It is used to measure the thickness of the coating. A micro load (0.05 N) is applied on the stylus which acts on the surface of the coating, while the sample is moved with uniform motion in a straight line. The thickness of the coating can be obtained from the profile curve between the substrate and the coating, which is derived from the processed data measured through the displacement sensor for the slight fluctuation of the stylus.

Wear rate:

     It is used to measure the cross-sectional area of the wear scar of the material. A micro load (0.05 N) is applied on the stylus which acts on the surface of the coating, while the sample is moved with uniform motion in a straight line. The wear volume of the coating can be obtained from the cross-sectional area of the wear scar, which is derived from the processed data measured through the displacement sensor for the slight fluctuation of the stylus.

The main technical indicators of the instrument

Indentation test:

1.        Loading mode: automatically load
2.        Loading range: 0.25 N to 300 N, the accuracy(precision) is 0.25 N
3.        Loading rate: 10 N/min~100 N/min
4.        Measuring range: 0.5μm~100μm
5.        Indenter: diamond with 90° cone angle and 0.1mm tip radius (other specifications can also be used)
6.        Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

Scratch test:

1.           Loading mode: automatically load
2.           Loading range: 0.25 N ~ 200 N automatic loading continuously, the accuracy(precision) is 0.25N
3.           Scratch length: 2 mm ~ 40 mm
4.           Loading rate: 10 N/min ~100 N/min
5.           Measuring range: 0.5μm~30μm
6.           Friction measuring range: 10 N to 100 N, accuracy(precision) 0.25N
7.           Indenter: diamond with 120 ° cone angle and 0.2 mm the tip radius
8.           Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

Reciprocating friction:

1.           Load range: 0.5 N to 300 N automatically load, the accuracy(precision) is 0.25 N
2.           Loading rate: 10 N/min ~ 100 N/min
3.           Up-down height: 20 mm
4.           Moving distance: 5 mm ~ 40 mm
5.           Reciprocating speed: 1 mm/min~ 240 mm/min, the accuracy(precision) is ± 0.1mm
6.           Mating materials diameter: Φ3 mm, Φ4 mm, Φ5 mm, Φ6 mm
7.           Friction pair materials: GCr15 steel ball, AlO ceramic ball, ZrO ceramic ball, SiN ceramic ball
8.           Temperature: room temperature to 300 ℃ (optional)
9.           Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

Roughness

1.           Test load: 5 g ~ 10 g
2.           Moving speed: 1mm/s ~ 4mm/s
3.           Measuring range: 1 μm ~ 200 μm
4.           Resolution: ± 0.02 μm
5.           Indenter: diamond with 90° cone angle and 0.1mm tip radius
6.           Roughness: Ra, Rz
7.           Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

 Measurement of elastic modulus:

1.           Loading mode: automatically load
2.           Load: 0.5 N to 300 N , the accuracy(precision) is 0.25 N
3.           Loading rate: 10 N/min ~ 100 N/min
4.           Measuring range: >5 μm 
5.           Resolution: ± 0.02μm
6.           Indenter: diamond with cube corner pressure needle (triangular pyramid)
7.           Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

Profilometer:

1.           Mobile speed: 1 mm / s ~ 4 mm / s
2.           Measuring range: 1 μm ~ 200 μm
3.           Specimen thickness: 1 mm to 10 mm
4.           Resolution: ± 0.02μm
5.           Indenter: diamond with 90° cone angle and 0.1mm tip radius
6.           Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

Wear rate:

1.           Load: 5 g ~ 10 g
2.           Moving speed: 1mm/s ~ 4 mm/s
3.           Measuring range: 2 μm ~ 200 μm
4.           Specimen thickness: 1mm to 10mm
5.           Resolution: ± 0.02μm
6.           Indenter: diamond with 90° cone angle and 0.1mm tip radius
7.           Wear rate: cross-sectional area of wear scar mm2 (wear volume / N • min)
8.           Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated

 



 
   

 
地址:甘肃省兰州市城关区南昌路582号
Lanzhou city,gansu province chengguan 582 nanchang road
单位:兰州华汇仪器科技有限公司
Lanzhou hua hui instrument technology co.,LTD
 
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