1C31194G01模块备件

1C31194G01

适用于铝、铍、镁等表面的涂层，
和钛。仪器必须用标准校准
具有与涂层相同的组成。
注15：涂层密度随磷含量的质量%而变化（见附录X2）。
9.3.4测微计法测量零件、试样和试样，
或在电镀前后使用合适的工具将其钉入特定点
千分尺。确保测量的表面光滑，
清洁、干燥。
9.3.5使用具有已知表面积的类似基材称重、平板称重、称重方法，确称重
毫克电镀前后，确保零件或
每次测量时，试样应在室温下干燥。
B 733-97
5.
根据重量的增加计算厚度，具体如下：
重力和面积如下：
涂层厚度，µm 5 10 W/~A 3 D！(1)
哪里：
W＝以毫克为单位的体重增加，
A=总表面积（平方厘米），以及
D=克每立方厘米（见附录X2）。
9.3.6库仑法测量涂层厚度
根据试验方法B 504。所使用的溶液
应符合制造商的建议。
测试前应清洁涂层表面（见
注14）。
9.3.6.1在相同条件下，用镀在相同溶液中的沉积物校准标准厚度试样。
9.3.7 X射线光谱法测量涂层厚度
根据试验方法B 568，仪器必须：
用与样品成分相同的标准校准
涂层
注16：此方法仅建议用于
作为电镀条件。必须知道涂层的磷含量
以计算沉积物的厚度。基体效应
磷在涂层各层中的分布也会影响涂层的强度
测量度，并要求制定校准标准
在与生产工艺相同的条件下。
9.4附着力：
9.4.1弯曲试验（试验方法B 571）-试样
在心轴直径43上弯曲180°，厚度（10mm
小值），并在43次方检验
界面处剥落或分离的放大倍数。好的
弯管受拉侧涂层中的裂纹不是一个问题
表明粘附性差。将锋利的探针插入
涂层和基体金属的界面，以确定
建议粘附。
注17：适当的试样为约25至50
宽度200至300毫米，厚度3至6毫米。
9.4.2冲击试验-带有弹簧的中心冲头
半径为2至3 mm的点用于测试材料的附着力
电镀零件非重要表面上的涂层。制作
三个紧密间隔的凹痕，并在103下检查
涂层剥落或起泡的放大率
拒绝的原因。
9.4.3热冲击：将涂层零件加热至200°C
然后在室温水中淬火。这个
检查涂层是否有起泡或其他不良迹象
43倍镜下的粘附。
9.5显微硬度涂层的显微硬度可以：
通过试验方法B 578，使用努氏压头和
以努氏硬度值（HK）报告。这将有所不同
取决于载荷、压头类型和操作员。100克负荷
推荐使用。菱形努氏压头具有更高的硬度
硬度读数大于方底棱锥维氏硬度
100至300 g载荷的金刚石压头，见参考文献（6）。对于
大度，小涂层厚度为75µm
推荐。维氏或努氏硬度的换算
不建议使用罗克韦尔C的编号。
注18：在钢表面的厚（75µm+）涂层上，a表面的显微硬度
允许进行确定。
9.6孔隙度：没有普遍接受的测试
多孔性。必要时，可使用以下测试之一：
在电镀零件或试样上。
9.6.1铁基基材的铁氧基试验：制备
通过溶解25克铁氰化钾和
在1升蒸馏水中加入15克氯化钠。之后
清洁时，将零件在25°C的试验溶液中浸泡30秒。
冲洗和空气干燥后，检查零件是否有蓝斑，
其形成于孔隙部位。
9.6.2铁基基材的沸水试验-
将待处理零件完全浸入已填充的容器中
在室温下使用充气水。给容器加热
烧杯中的水开始沸腾的速度不小于
在初次施用后不超过15分钟、也不超过20分钟
热。继续将水煮沸30分钟，然后取出水
零件，风干，并检查是否有锈斑，这表明存在气孔。
注19：充气水通过使清洁的压缩空气鼓泡来制备
在室温下通过玻璃扩散盘通过蒸馏水
曝气水的pH值应为6.7+0.5。
9.6.3铁基基材的曝气水试验-
将零件浸入剧烈充气的IV型或更好的环境中4小时
25.6.2°C温度下的水（见规范D 1193），以及
然后检查零件是否生锈

1C31194G01

1C31194G01

applicable to coatings on aluminum, beryllium, magnesium, and titanium. The instrument must be calibrated with standards having the same composition as the coating. NOTE 15—The density of the coating varies with its mass % phosphorus content (See Appendix X2). 9.3.4 Micrometer Method—Measure the part, test coupon, or pin in a specific spot before and after plating using a suitable micrometer. Make sure that the surfaces measured are smooth, clean, and dry. 9.3.5 Weigh, Plate, Weigh Method—Using a similar substrate material of known surface area, weigh to the nearest milligram before and after plating making sure that the part or coupon is dry and at room temperature for each measurement. B 733 – 97 5 Calculate the thickness from the increase in weight, specific gravity, and area as follows: coating thickness, µm 5 10 W/~A 3 D! (1) where: W = weight gain in milligrams, A = total surface area in square centimetres, and D = grams per cubic centimetres (see Appendix X2). 9.3.6 Coulometric Method—Measure the coating thickness in accordance with Test Method B 504. The solution to be used shall be in accordance with manufacturer’s recommendations. The surface of the coating shall be cleaned prior to testing (see Note 14). 9.3.6.1 Calibrate standard thickness specimens with deposits plated in the same solution under the same conditions. 9.3.7 X-Ray Spectrometry—Measure the coating thickness in accordance with Test Method B 568. The instrument must be calibrated with standards having the same composition as the coating. NOTE 16—This method is only recommended for deposits in the as-plated condition. The phosphorus content of the coating must be known to calculate the thickness of the deposit. Matrix effect due to the distribution of phosphorus in layers of the coating also effect the measurement accuracy and require that calibration standards be made under the same conditions as the production process. 9.4 Adhesion: 9.4.1 Bend Test (Test Methods B 571)—A sample specimen is bent 180° over a mandrel diameter 43 the thickness (10 mm minimum) of the specimen and examined at 43 power magnification for flaking or separation at the interface. Fine cracks in the coating on the tension side of the bend are not an indication of poor adhesion. Insertion of a sharp probe at the interface of the coating and basis metal to determine the adhesion is suggested. NOTE 17—Appropriate test specimens are strips approximately 25 to 50 mm wide, 200 to 300 mm long and 3 to 6 mm thick. 9.4.2 Impact Test—A spring-loaded center punch with a point having 2 to 3 mm radius is used to test adhesion of the coating on nonsignificant surfaces of the plated part. Make three closely spaced indentations and examine under 103 magnification for flaking or blistering of the coating, which is cause for rejection. 9.4.3 Thermal Shock—The coated part is heated to 200°C in an oven and then quenched in room temperature water. The coating is examined for blistering or other evidence of poor adhesion at 43 magnification. 9.5 Microhardness—The microhardness of the coating can be measured by Test Method B 578 using Knoop indenter and is reported in Knoop Hardness Number (HK). It will vary depending on loads, type of indenter, and operator. A100 g load is recommended. The rhombic Knoop indenter gives higher hardness readings than the square-base pyramidal Vickers diamond indenter for 100 to 300 g loads, see Ref (6). For maximum accuracy, a minimum coating thickness of 75 µm is recommended. Conversions of Vickers or Knoop hardness number to Rockwell C is not recommended. NOTE 18—On thick (75 µm+) coatings on steel a surface microhardness determination is permissible. 9.6 Porosity—There is no universally accepted test for porosity. When required, one of the following tests can be used on the plated part or specimen. 9.6.1 Ferroxyl Test for Iron Base Substrates—Prepare the test solution by dissolving 25 g of potassium ferricyanide and 15 g of sodium chloride in 1 L of distilled water. After cleaning, immerse the part for 30 s in the test solution at 25°C. After rinsing and air drying, examine the part for blue spots, which form at pore sites. 9.6.2 Boiling Water Test for Iron-Base Substrates— Completely immerse the part to be treated in a vessel filled with aerated water at room temperature. Apply heat to the beaker at such a rate that the water begins to boil in not less than 15 min, nor more than 20 min after the initial application of heat. Continue to boil the water for 30 min. Then remove the part, air dry, and examine for rust spots, which indicate pores. NOTE 19—Aerated water is prepared by bubbling clean compressed air through distilled water by means of a glass diffusion disk at room temperature for 12 h. The pH of the aerated water should be 6.7 + 0.5. 9.6.3 Aerated Water Test for Iron-Base Substrates— Immerse the part for 4 h in vigorously aerated Type IV or better water (see Specification D 1193) at 25 6 2°C temperature and then examine the part for rust spots. 9.6.4 Alizarin Test for Aluminum Alloys— Wipe the plated part or specimen with 10 mass % sodium hydroxide solution. After 3 min contact, rinse, and apply a solution of alizarin sulfonate prepared by dissolving 1.5 g of methyl cellulose in 90 mL of bo